How severe is CVE-2024-21504?

CVE-2024-21504 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2024-21504 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2024-21504?

CVE-2024-21504 affects Laravel Livewire. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2024-21504?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2024-21504 have an EU (EUVD) identifier?

Yes. CVE-2024-21504 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-0800.

When was CVE-2024-21504 published?

CVE-2024-21504 was published on 2024-03-19 and last updated on 2026-06-17.

CVE-2024-21504

CVE-2024-21504 is a medium-severity vulnerability in Laravel Livewire with a CVSS 3.x base score of 6.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
EPSS exploit prediction: 1% (40th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2024-0800
Weakness: CWE-79
Affected product: Laravel Livewire
Published: 2024-03-19
Last modified: 2026-06-17

Description

Versions of the package livewire/livewire from 3.3.5 and before 3.4.9 are vulnerable to Cross-site Scripting (XSS) when a page uses [Url] for a property. An attacker can inject HTML code in the context of the user's browser session by crafting a malicious link and convincing the user to click on it.

Frequently asked questions

What is CVE-2024-21504?: Versions of the package livewire/livewire from 3.3.5 and before 3.4.9 are vulnerable to Cross-site Scripting (XSS) when a page uses [Url] for a property. An attacker can inject HTML code in the context of the user's browser session by crafting a malicious link and convincing the user to click on it.
How severe is CVE-2024-21504?: CVE-2024-21504 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2024-21504 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2024-21504?: CVE-2024-21504 affects Laravel Livewire. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2024-21504?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2024-21504 have an EU (EUVD) identifier?: Yes. CVE-2024-21504 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-0800.
When was CVE-2024-21504 published?: CVE-2024-21504 was published on 2024-03-19 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:laravel:livewire:*:*:*:*:*:*:*:*

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